The base would be a pentagon, while the faces would be triangles.
A pentagonal pyramid.
a pentagonal pyramid or a pentagonal prisim
a pentagonal pyramid is a shape with a base of a triangle, and triangles forming up to the point
The base of a pentagonal prism is a pentagon. Just like a square pyramid has a square for a base, a pentagonal prism has a pentagon for a base.
A pentagonal pyramid
A pentagonal pyramid is a three-dimensional shape with a pentagonal base and five triangular faces that converge at a single point called the apex. It has six vertices and ten edges. The pentagonal base provides stability and the triangular faces give the pyramid a pointed top.
pentagonal pyramid
It's a Pentagonal Prism or Pyramid.
A square pyramid has a square base and four triangular faces. A pentagonal pyramid has a pentagonal base and five triangular faces.
The 3D shape you are describing is a pentagonal pyramid. It has a pentagonal base with five sides, and five vertices where the triangular faces meet. The three rectangle faces are lateral faces that connect the triangular base to the apex of the pyramid. The pentagonal pyramid is a type of pyramid with a polygonal base and triangular faces.
It's a pentagonal pyramid.
Five (and a pentagonal base).Five (and a pentagonal base).Five (and a pentagonal base).Five (and a pentagonal base).